/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/parallel/misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 16:18:52,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 16:18:52,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 16:18:52,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 16:18:52,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 16:18:52,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 16:18:52,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 16:18:52,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 16:18:52,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 16:18:52,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 16:18:52,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 16:18:52,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 16:18:52,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 16:18:52,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 16:18:52,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 16:18:52,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 16:18:52,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 16:18:52,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 16:18:52,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 16:18:52,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 16:18:52,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 16:18:52,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 16:18:52,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 16:18:52,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 16:18:52,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 16:18:52,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 16:18:52,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 16:18:52,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 16:18:52,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-06 16:18:52,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 16:18:52,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 16:18:52,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 16:18:52,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 16:18:52,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 16:18:52,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 16:18:52,525 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 16:18:52,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 16:18:52,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 16:18:52,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 16:18:52,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 16:18:52,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 16:18:52,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 16:18:52,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-06 16:18:52,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 16:18:52,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-06 16:18:52,528 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-06 16:18:52,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 16:18:52,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-06 16:18:52,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 16:18:52,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-06 16:18:52,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 16:18:52,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 16:18:52,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 16:18:52,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:18:52,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 16:18:52,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 16:18:52,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-06 16:18:52,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-06 16:18:52,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-06 16:18:52,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-06 16:18:52,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 16:18:52,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 16:18:52,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 16:18:52,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 16:18:52,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 16:18:52,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 16:18:52,957 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 16:18:52,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/misc-3-extended.wvr.c [2021-10-06 16:18:53,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e61c6d1e/24c0d645bb7d40b58a5d15a95f449e19/FLAG8f682d1ed [2021-10-06 16:18:53,668 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 16:18:53,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-3-extended.wvr.c [2021-10-06 16:18:53,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e61c6d1e/24c0d645bb7d40b58a5d15a95f449e19/FLAG8f682d1ed [2021-10-06 16:18:54,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e61c6d1e/24c0d645bb7d40b58a5d15a95f449e19 [2021-10-06 16:18:54,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 16:18:54,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-06 16:18:54,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 16:18:54,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 16:18:54,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 16:18:54,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe9a3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54, skipping insertion in model container [2021-10-06 16:18:54,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 16:18:54,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 16:18:54,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-3-extended.wvr.c[2578,2591] [2021-10-06 16:18:54,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:18:54,266 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 16:18:54,291 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-3-extended.wvr.c[2578,2591] [2021-10-06 16:18:54,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 16:18:54,309 INFO L208 MainTranslator]: Completed translation [2021-10-06 16:18:54,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54 WrapperNode [2021-10-06 16:18:54,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 16:18:54,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 16:18:54,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 16:18:54,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 16:18:54,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 16:18:54,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 16:18:54,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 16:18:54,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 16:18:54,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 16:18:54,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 16:18:54,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 16:18:54,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 16:18:54,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (1/1) ... [2021-10-06 16:18:54,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 16:18:54,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:18:54,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 16:18:54,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 16:18:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 16:18:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 16:18:54,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 16:18:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 16:18:54,492 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 16:18:54,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 16:18:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-06 16:18:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 16:18:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-06 16:18:54,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 16:18:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 16:18:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 16:18:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 16:18:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-06 16:18:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 16:18:54,502 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 16:18:55,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 16:18:55,088 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-06 16:18:55,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:18:55 BoogieIcfgContainer [2021-10-06 16:18:55,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 16:18:55,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 16:18:55,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 16:18:55,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 16:18:55,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 04:18:54" (1/3) ... [2021-10-06 16:18:55,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377b69f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:18:55, skipping insertion in model container [2021-10-06 16:18:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 04:18:54" (2/3) ... [2021-10-06 16:18:55,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377b69f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 04:18:55, skipping insertion in model container [2021-10-06 16:18:55,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:18:55" (3/3) ... [2021-10-06 16:18:55,100 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3-extended.wvr.c [2021-10-06 16:18:55,107 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-06 16:18:55,107 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 16:18:55,107 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-06 16:18:55,108 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 16:18:55,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,153 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,154 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,155 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,156 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,157 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,158 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,159 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,161 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,162 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,163 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,164 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,165 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,166 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,166 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,166 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,167 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,168 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,169 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,169 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,169 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,173 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,174 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,177 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,177 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,178 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,178 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,178 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,184 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,185 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,185 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 16:18:55,205 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 16:18:55,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 16:18:55,268 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 16:18:55,268 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-10-06 16:18:55,287 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 16:18:55,300 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 302 flow [2021-10-06 16:18:55,303 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 302 flow [2021-10-06 16:18:55,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 302 flow [2021-10-06 16:18:55,388 INFO L129 PetriNetUnfolder]: 16/136 cut-off events. [2021-10-06 16:18:55,389 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 16:18:55,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 16/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2021-10-06 16:18:55,410 INFO L116 LiptonReduction]: Number of co-enabled transitions 5030 [2021-10-06 16:19:01,557 INFO L131 LiptonReduction]: Checked pairs total: 9915 [2021-10-06 16:19:01,557 INFO L133 LiptonReduction]: Total number of compositions: 130 [2021-10-06 16:19:01,569 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 44 transitions, 112 flow [2021-10-06 16:19:01,695 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1548 states, 1424 states have (on average 3.8644662921348316) internal successors, (5503), 1547 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 1548 states, 1424 states have (on average 3.8644662921348316) internal successors, (5503), 1547 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 16:19:01,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:01,717 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 16:19:01,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:01,724 INFO L82 PathProgramCache]: Analyzing trace with hash 590586, now seen corresponding path program 1 times [2021-10-06 16:19:01,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:01,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845260779] [2021-10-06 16:19:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:01,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:01,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:01,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845260779] [2021-10-06 16:19:01,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845260779] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:02,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:02,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:19:02,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511771935] [2021-10-06 16:19:02,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:02,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:02,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:02,041 INFO L87 Difference]: Start difference. First operand has 1548 states, 1424 states have (on average 3.8644662921348316) internal successors, (5503), 1547 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:02,207 INFO L93 Difference]: Finished difference Result 2594 states and 8596 transitions. [2021-10-06 16:19:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:02,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 16:19:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:02,267 INFO L225 Difference]: With dead ends: 2594 [2021-10-06 16:19:02,267 INFO L226 Difference]: Without dead ends: 2594 [2021-10-06 16:19:02,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2021-10-06 16:19:02,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2288. [2021-10-06 16:19:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 2164 states have (on average 3.8442698706099816) internal successors, (8319), 2287 states have internal predecessors, (8319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 8319 transitions. [2021-10-06 16:19:02,500 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 8319 transitions. Word has length 3 [2021-10-06 16:19:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:02,501 INFO L470 AbstractCegarLoop]: Abstraction has 2288 states and 8319 transitions. [2021-10-06 16:19:02,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 8319 transitions. [2021-10-06 16:19:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 16:19:02,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:02,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 16:19:02,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-06 16:19:02,503 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:02,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:02,504 INFO L82 PathProgramCache]: Analyzing trace with hash 590588, now seen corresponding path program 1 times [2021-10-06 16:19:02,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:02,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206165083] [2021-10-06 16:19:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:02,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:02,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:02,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206165083] [2021-10-06 16:19:02,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206165083] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:02,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:02,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-06 16:19:02,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926974025] [2021-10-06 16:19:02,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:02,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:02,548 INFO L87 Difference]: Start difference. First operand 2288 states and 8319 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:02,668 INFO L93 Difference]: Finished difference Result 3546 states and 12228 transitions. [2021-10-06 16:19:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:02,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 16:19:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:02,711 INFO L225 Difference]: With dead ends: 3546 [2021-10-06 16:19:02,711 INFO L226 Difference]: Without dead ends: 3546 [2021-10-06 16:19:02,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-10-06 16:19:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 3098. [2021-10-06 16:19:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 2974 states have (on average 3.8883658372562206) internal successors, (11564), 3097 states have internal predecessors, (11564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 11564 transitions. [2021-10-06 16:19:02,950 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 11564 transitions. Word has length 3 [2021-10-06 16:19:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:02,950 INFO L470 AbstractCegarLoop]: Abstraction has 3098 states and 11564 transitions. [2021-10-06 16:19:02,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 11564 transitions. [2021-10-06 16:19:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:19:02,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:02,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:19:02,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-06 16:19:02,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:02,964 INFO L82 PathProgramCache]: Analyzing trace with hash 18309659, now seen corresponding path program 1 times [2021-10-06 16:19:02,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:02,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112107828] [2021-10-06 16:19:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:02,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:03,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:03,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112107828] [2021-10-06 16:19:03,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112107828] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:03,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:03,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:19:03,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596615647] [2021-10-06 16:19:03,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:03,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:03,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:03,144 INFO L87 Difference]: Start difference. First operand 3098 states and 11564 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:03,319 INFO L93 Difference]: Finished difference Result 4316 states and 15948 transitions. [2021-10-06 16:19:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:03,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:19:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:03,376 INFO L225 Difference]: With dead ends: 4316 [2021-10-06 16:19:03,377 INFO L226 Difference]: Without dead ends: 4316 [2021-10-06 16:19:03,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 16:19:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-10-06 16:19:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 3348. [2021-10-06 16:19:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3348 states, 3224 states have (on average 4.1181761786600495) internal successors, (13277), 3347 states have internal predecessors, (13277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3348 states to 3348 states and 13277 transitions. [2021-10-06 16:19:03,572 INFO L78 Accepts]: Start accepts. Automaton has 3348 states and 13277 transitions. Word has length 4 [2021-10-06 16:19:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:03,573 INFO L470 AbstractCegarLoop]: Abstraction has 3348 states and 13277 transitions. [2021-10-06 16:19:03,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3348 states and 13277 transitions. [2021-10-06 16:19:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:19:03,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:03,574 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:19:03,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-06 16:19:03,575 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 18309660, now seen corresponding path program 1 times [2021-10-06 16:19:03,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:03,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904488398] [2021-10-06 16:19:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:03,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:03,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:03,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904488398] [2021-10-06 16:19:03,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904488398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:03,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665294226] [2021-10-06 16:19:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:03,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:03,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:03,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-06 16:19:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:03,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:19:03,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:04,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665294226] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:04,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:04,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-06 16:19:04,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413741887] [2021-10-06 16:19:04,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:19:04,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:19:04,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:04,098 INFO L87 Difference]: Start difference. First operand 3348 states and 13277 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:04,491 INFO L93 Difference]: Finished difference Result 5014 states and 18328 transitions. [2021-10-06 16:19:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 16:19:04,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:19:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:04,556 INFO L225 Difference]: With dead ends: 5014 [2021-10-06 16:19:04,557 INFO L226 Difference]: Without dead ends: 5014 [2021-10-06 16:19:04,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:04,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5014 states. [2021-10-06 16:19:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5014 to 3608. [2021-10-06 16:19:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 3484 states have (on average 4.186854190585533) internal successors, (14587), 3607 states have internal predecessors, (14587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 14587 transitions. [2021-10-06 16:19:04,774 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 14587 transitions. Word has length 4 [2021-10-06 16:19:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:04,775 INFO L470 AbstractCegarLoop]: Abstraction has 3608 states and 14587 transitions. [2021-10-06 16:19:04,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 14587 transitions. [2021-10-06 16:19:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 16:19:04,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:04,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-06 16:19:04,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:04,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:04,990 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:04,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:04,990 INFO L82 PathProgramCache]: Analyzing trace with hash 18309662, now seen corresponding path program 1 times [2021-10-06 16:19:04,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:04,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588644108] [2021-10-06 16:19:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:04,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:05,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:05,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588644108] [2021-10-06 16:19:05,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588644108] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:05,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66785989] [2021-10-06 16:19:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:05,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:05,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:05,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:05,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-06 16:19:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:05,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:19:05,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:05,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66785989] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:05,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:05,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-06 16:19:05,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727654178] [2021-10-06 16:19:05,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:19:05,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:19:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:19:05,298 INFO L87 Difference]: Start difference. First operand 3608 states and 14587 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:05,657 INFO L93 Difference]: Finished difference Result 5806 states and 21579 transitions. [2021-10-06 16:19:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 16:19:05,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-06 16:19:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:05,698 INFO L225 Difference]: With dead ends: 5806 [2021-10-06 16:19:05,698 INFO L226 Difference]: Without dead ends: 5800 [2021-10-06 16:19:05,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-10-06 16:19:05,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 3854. [2021-10-06 16:19:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3730 states have (on average 4.179892761394102) internal successors, (15591), 3853 states have internal predecessors, (15591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 15591 transitions. [2021-10-06 16:19:05,929 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 15591 transitions. Word has length 4 [2021-10-06 16:19:05,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:05,930 INFO L470 AbstractCegarLoop]: Abstraction has 3854 states and 15591 transitions. [2021-10-06 16:19:05,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 15591 transitions. [2021-10-06 16:19:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:19:05,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:05,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:05,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:06,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:06,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash -663252249, now seen corresponding path program 1 times [2021-10-06 16:19:06,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:06,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622521583] [2021-10-06 16:19:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:06,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:06,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:06,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622521583] [2021-10-06 16:19:06,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622521583] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:06,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:06,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:19:06,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205509812] [2021-10-06 16:19:06,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:19:06,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:19:06,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 16:19:06,253 INFO L87 Difference]: Start difference. First operand 3854 states and 15591 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:06,492 INFO L93 Difference]: Finished difference Result 7356 states and 28848 transitions. [2021-10-06 16:19:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:06,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-06 16:19:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:06,541 INFO L225 Difference]: With dead ends: 7356 [2021-10-06 16:19:06,541 INFO L226 Difference]: Without dead ends: 7356 [2021-10-06 16:19:06,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 16:19:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7356 states. [2021-10-06 16:19:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7356 to 5524. [2021-10-06 16:19:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5400 states have (on average 4.334074074074074) internal successors, (23404), 5523 states have internal predecessors, (23404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 23404 transitions. [2021-10-06 16:19:06,922 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 23404 transitions. Word has length 8 [2021-10-06 16:19:06,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:06,923 INFO L470 AbstractCegarLoop]: Abstraction has 5524 states and 23404 transitions. [2021-10-06 16:19:06,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 23404 transitions. [2021-10-06 16:19:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 16:19:06,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:06,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:06,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-06 16:19:06,930 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:06,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:06,937 INFO L82 PathProgramCache]: Analyzing trace with hash -663194618, now seen corresponding path program 1 times [2021-10-06 16:19:06,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:06,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938936843] [2021-10-06 16:19:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:06,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:07,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:07,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938936843] [2021-10-06 16:19:07,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938936843] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:07,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:19:07,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-06 16:19:07,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817239584] [2021-10-06 16:19:07,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:19:07,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:19:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 16:19:07,012 INFO L87 Difference]: Start difference. First operand 5524 states and 23404 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:07,224 INFO L93 Difference]: Finished difference Result 9014 states and 36048 transitions. [2021-10-06 16:19:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:07,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-06 16:19:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:07,294 INFO L225 Difference]: With dead ends: 9014 [2021-10-06 16:19:07,294 INFO L226 Difference]: Without dead ends: 9014 [2021-10-06 16:19:07,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 16:19:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9014 states. [2021-10-06 16:19:07,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9014 to 7432. [2021-10-06 16:19:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 7308 states have (on average 4.403804050355775) internal successors, (32183), 7431 states have internal predecessors, (32183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 32183 transitions. [2021-10-06 16:19:07,785 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 32183 transitions. Word has length 8 [2021-10-06 16:19:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:07,786 INFO L470 AbstractCegarLoop]: Abstraction has 7432 states and 32183 transitions. [2021-10-06 16:19:07,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 32183 transitions. [2021-10-06 16:19:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:19:07,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:07,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:07,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-06 16:19:07,789 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:07,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1529053082, now seen corresponding path program 1 times [2021-10-06 16:19:07,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:07,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93355073] [2021-10-06 16:19:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:07,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:07,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:07,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93355073] [2021-10-06 16:19:07,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93355073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:07,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360708509] [2021-10-06 16:19:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:07,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:07,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:07,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-06 16:19:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:07,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:19:07,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:08,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360708509] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:08,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:19:08,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2021-10-06 16:19:08,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234429572] [2021-10-06 16:19:08,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:19:08,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:08,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:19:08,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:08,042 INFO L87 Difference]: Start difference. First operand 7432 states and 32183 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:08,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:08,321 INFO L93 Difference]: Finished difference Result 12700 states and 50588 transitions. [2021-10-06 16:19:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:08,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 16:19:08,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:08,415 INFO L225 Difference]: With dead ends: 12700 [2021-10-06 16:19:08,415 INFO L226 Difference]: Without dead ends: 12700 [2021-10-06 16:19:08,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12700 states. [2021-10-06 16:19:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12700 to 9982. [2021-10-06 16:19:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9982 states, 9858 states have (on average 4.2713532156624066) internal successors, (42107), 9981 states have internal predecessors, (42107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9982 states to 9982 states and 42107 transitions. [2021-10-06 16:19:09,026 INFO L78 Accepts]: Start accepts. Automaton has 9982 states and 42107 transitions. Word has length 9 [2021-10-06 16:19:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:09,027 INFO L470 AbstractCegarLoop]: Abstraction has 9982 states and 42107 transitions. [2021-10-06 16:19:09,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9982 states and 42107 transitions. [2021-10-06 16:19:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:19:09,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:09,029 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:09,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:09,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:09,243 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:09,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:09,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1529053081, now seen corresponding path program 1 times [2021-10-06 16:19:09,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:09,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80427835] [2021-10-06 16:19:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:09,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:09,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:09,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80427835] [2021-10-06 16:19:09,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80427835] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:09,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717543112] [2021-10-06 16:19:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:09,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:09,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:09,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:09,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-06 16:19:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:09,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:19:09,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:09,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717543112] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:09,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:19:09,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2021-10-06 16:19:09,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170778268] [2021-10-06 16:19:09,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 16:19:09,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:09,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 16:19:09,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:09,458 INFO L87 Difference]: Start difference. First operand 9982 states and 42107 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:09,694 INFO L93 Difference]: Finished difference Result 12388 states and 51007 transitions. [2021-10-06 16:19:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 16:19:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 16:19:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:09,784 INFO L225 Difference]: With dead ends: 12388 [2021-10-06 16:19:09,785 INFO L226 Difference]: Without dead ends: 12388 [2021-10-06 16:19:09,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12388 states. [2021-10-06 16:19:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12388 to 9868. [2021-10-06 16:19:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9868 states, 9744 states have (on average 4.237889983579639) internal successors, (41294), 9867 states have internal predecessors, (41294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9868 states to 9868 states and 41294 transitions. [2021-10-06 16:19:10,323 INFO L78 Accepts]: Start accepts. Automaton has 9868 states and 41294 transitions. Word has length 9 [2021-10-06 16:19:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:10,324 INFO L470 AbstractCegarLoop]: Abstraction has 9868 states and 41294 transitions. [2021-10-06 16:19:10,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 9868 states and 41294 transitions. [2021-10-06 16:19:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:19:10,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:10,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:10,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:10,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:10,538 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1528995451, now seen corresponding path program 1 times [2021-10-06 16:19:10,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:10,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520556664] [2021-10-06 16:19:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:10,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:10,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:10,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520556664] [2021-10-06 16:19:10,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520556664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:10,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429687639] [2021-10-06 16:19:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:10,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:10,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:10,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:10,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-06 16:19:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:10,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:19:10,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:10,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429687639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:10,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:19:10,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2021-10-06 16:19:10,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820457134] [2021-10-06 16:19:10,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:19:10,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:19:10,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:10,733 INFO L87 Difference]: Start difference. First operand 9868 states and 41294 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:11,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:11,173 INFO L93 Difference]: Finished difference Result 16286 states and 63753 transitions. [2021-10-06 16:19:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:11,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 16:19:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:11,275 INFO L225 Difference]: With dead ends: 16286 [2021-10-06 16:19:11,276 INFO L226 Difference]: Without dead ends: 16286 [2021-10-06 16:19:11,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16286 states. [2021-10-06 16:19:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16286 to 14030. [2021-10-06 16:19:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14030 states, 13906 states have (on average 4.12138645189127) internal successors, (57312), 14029 states have internal predecessors, (57312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14030 states to 14030 states and 57312 transitions. [2021-10-06 16:19:12,107 INFO L78 Accepts]: Start accepts. Automaton has 14030 states and 57312 transitions. Word has length 9 [2021-10-06 16:19:12,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:12,108 INFO L470 AbstractCegarLoop]: Abstraction has 14030 states and 57312 transitions. [2021-10-06 16:19:12,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:12,108 INFO L276 IsEmpty]: Start isEmpty. Operand 14030 states and 57312 transitions. [2021-10-06 16:19:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:19:12,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:12,110 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:12,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:12,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:12,324 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:12,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1528995450, now seen corresponding path program 1 times [2021-10-06 16:19:12,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:12,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537777285] [2021-10-06 16:19:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:12,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:12,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:12,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537777285] [2021-10-06 16:19:12,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537777285] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:12,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313013669] [2021-10-06 16:19:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:12,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:12,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:12,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:12,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-06 16:19:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:12,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:19:12,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:12,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313013669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:12,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:12,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 16:19:12,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998150214] [2021-10-06 16:19:12,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:12,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:12,961 INFO L87 Difference]: Start difference. First operand 14030 states and 57312 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:13,839 INFO L93 Difference]: Finished difference Result 30566 states and 115757 transitions. [2021-10-06 16:19:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:19:13,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 16:19:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:14,122 INFO L225 Difference]: With dead ends: 30566 [2021-10-06 16:19:14,123 INFO L226 Difference]: Without dead ends: 30566 [2021-10-06 16:19:14,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:19:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30566 states. [2021-10-06 16:19:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30566 to 16182. [2021-10-06 16:19:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16182 states, 16058 states have (on average 4.212666583634325) internal successors, (67647), 16181 states have internal predecessors, (67647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16182 states to 16182 states and 67647 transitions. [2021-10-06 16:19:15,024 INFO L78 Accepts]: Start accepts. Automaton has 16182 states and 67647 transitions. Word has length 9 [2021-10-06 16:19:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:15,024 INFO L470 AbstractCegarLoop]: Abstraction has 16182 states and 67647 transitions. [2021-10-06 16:19:15,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 16182 states and 67647 transitions. [2021-10-06 16:19:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 16:19:15,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:15,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:15,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:15,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-06 16:19:15,242 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:15,243 INFO L82 PathProgramCache]: Analyzing trace with hash 915804756, now seen corresponding path program 2 times [2021-10-06 16:19:15,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:15,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691256890] [2021-10-06 16:19:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:15,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:15,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:15,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691256890] [2021-10-06 16:19:15,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691256890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:15,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938246839] [2021-10-06 16:19:15,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:19:15,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:15,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:15,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:15,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-06 16:19:15,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:19:15,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:15,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:19:15,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:15,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938246839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:15,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:15,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-06 16:19:15,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684584810] [2021-10-06 16:19:15,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 16:19:15,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:15,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 16:19:15,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:15,586 INFO L87 Difference]: Start difference. First operand 16182 states and 67647 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:16,369 INFO L93 Difference]: Finished difference Result 24600 states and 98711 transitions. [2021-10-06 16:19:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 16:19:16,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 16:19:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:16,486 INFO L225 Difference]: With dead ends: 24600 [2021-10-06 16:19:16,486 INFO L226 Difference]: Without dead ends: 24594 [2021-10-06 16:19:16,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 91.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24594 states. [2021-10-06 16:19:17,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24594 to 17518. [2021-10-06 16:19:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17518 states, 17394 states have (on average 4.238128090146027) internal successors, (73718), 17517 states have internal predecessors, (73718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17518 states to 17518 states and 73718 transitions. [2021-10-06 16:19:17,335 INFO L78 Accepts]: Start accepts. Automaton has 17518 states and 73718 transitions. Word has length 9 [2021-10-06 16:19:17,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:17,336 INFO L470 AbstractCegarLoop]: Abstraction has 17518 states and 73718 transitions. [2021-10-06 16:19:17,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 17518 states and 73718 transitions. [2021-10-06 16:19:17,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 16:19:17,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:17,337 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:17,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:17,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:17,539 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:17,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1695949799, now seen corresponding path program 3 times [2021-10-06 16:19:17,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:17,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238376392] [2021-10-06 16:19:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:17,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:17,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:17,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238376392] [2021-10-06 16:19:17,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238376392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:17,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722450364] [2021-10-06 16:19:17,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:19:17,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:17,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:17,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:17,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-06 16:19:17,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 16:19:17,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:17,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 16:19:17,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:18,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722450364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:18,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:18,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 16:19:18,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361404028] [2021-10-06 16:19:18,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:18,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:18,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:18,427 INFO L87 Difference]: Start difference. First operand 17518 states and 73718 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:19,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:19,739 INFO L93 Difference]: Finished difference Result 37526 states and 149140 transitions. [2021-10-06 16:19:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 16:19:19,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-06 16:19:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:19,974 INFO L225 Difference]: With dead ends: 37526 [2021-10-06 16:19:19,974 INFO L226 Difference]: Without dead ends: 37526 [2021-10-06 16:19:19,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-10-06 16:19:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37526 states. [2021-10-06 16:19:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37526 to 20712. [2021-10-06 16:19:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20712 states, 20588 states have (on average 4.459539537594716) internal successors, (91813), 20711 states have internal predecessors, (91813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20712 states to 20712 states and 91813 transitions. [2021-10-06 16:19:21,251 INFO L78 Accepts]: Start accepts. Automaton has 20712 states and 91813 transitions. Word has length 10 [2021-10-06 16:19:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:21,251 INFO L470 AbstractCegarLoop]: Abstraction has 20712 states and 91813 transitions. [2021-10-06 16:19:21,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 20712 states and 91813 transitions. [2021-10-06 16:19:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 16:19:21,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:21,258 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:21,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-06 16:19:21,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-06 16:19:21,474 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:21,475 INFO L82 PathProgramCache]: Analyzing trace with hash -154217291, now seen corresponding path program 4 times [2021-10-06 16:19:21,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:21,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464299597] [2021-10-06 16:19:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:21,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:21,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:21,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464299597] [2021-10-06 16:19:21,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464299597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:21,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064830063] [2021-10-06 16:19:21,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:19:21,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:21,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:21,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:21,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-06 16:19:21,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:19:21,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:19:21,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:21,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064830063] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:21,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:19:21,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-10-06 16:19:21,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832171529] [2021-10-06 16:19:21,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:19:21,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:19:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 16:19:21,799 INFO L87 Difference]: Start difference. First operand 20712 states and 91813 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:22,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:22,217 INFO L93 Difference]: Finished difference Result 28368 states and 118969 transitions. [2021-10-06 16:19:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 16:19:22,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-06 16:19:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:22,635 INFO L225 Difference]: With dead ends: 28368 [2021-10-06 16:19:22,635 INFO L226 Difference]: Without dead ends: 28358 [2021-10-06 16:19:22,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28358 states. [2021-10-06 16:19:23,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28358 to 21014. [2021-10-06 16:19:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21014 states, 20890 states have (on average 4.48750598372427) internal successors, (93744), 21013 states have internal predecessors, (93744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21014 states to 21014 states and 93744 transitions. [2021-10-06 16:19:23,512 INFO L78 Accepts]: Start accepts. Automaton has 21014 states and 93744 transitions. Word has length 10 [2021-10-06 16:19:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:23,512 INFO L470 AbstractCegarLoop]: Abstraction has 21014 states and 93744 transitions. [2021-10-06 16:19:23,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 21014 states and 93744 transitions. [2021-10-06 16:19:23,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 16:19:23,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:23,514 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:23,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-06 16:19:23,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:23,715 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash -154217315, now seen corresponding path program 1 times [2021-10-06 16:19:23,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:23,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990896027] [2021-10-06 16:19:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:23,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:23,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:23,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990896027] [2021-10-06 16:19:23,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990896027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:23,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664137916] [2021-10-06 16:19:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:23,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:23,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:23,776 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:23,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-06 16:19:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:23,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:19:23,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:24,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664137916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:24,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:24,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 16:19:24,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336340409] [2021-10-06 16:19:24,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 16:19:24,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:24,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 16:19:24,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:24,401 INFO L87 Difference]: Start difference. First operand 21014 states and 93744 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:25,727 INFO L93 Difference]: Finished difference Result 58896 states and 249847 transitions. [2021-10-06 16:19:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 16:19:25,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-06 16:19:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:26,427 INFO L225 Difference]: With dead ends: 58896 [2021-10-06 16:19:26,427 INFO L226 Difference]: Without dead ends: 58890 [2021-10-06 16:19:26,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 171.4ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-10-06 16:19:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58890 states. [2021-10-06 16:19:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58890 to 31584. [2021-10-06 16:19:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31584 states, 31460 states have (on average 4.673458359821996) internal successors, (147027), 31583 states have internal predecessors, (147027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31584 states to 31584 states and 147027 transitions. [2021-10-06 16:19:28,142 INFO L78 Accepts]: Start accepts. Automaton has 31584 states and 147027 transitions. Word has length 10 [2021-10-06 16:19:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:28,142 INFO L470 AbstractCegarLoop]: Abstraction has 31584 states and 147027 transitions. [2021-10-06 16:19:28,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 31584 states and 147027 transitions. [2021-10-06 16:19:28,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 16:19:28,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:28,149 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:28,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:28,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-06 16:19:28,351 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:28,355 INFO L82 PathProgramCache]: Analyzing trace with hash 722686084, now seen corresponding path program 1 times [2021-10-06 16:19:28,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:28,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860238202] [2021-10-06 16:19:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:28,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:28,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:28,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860238202] [2021-10-06 16:19:28,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860238202] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:28,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398038324] [2021-10-06 16:19:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:28,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:28,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:28,435 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:28,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-06 16:19:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:28,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:19:28,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:28,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398038324] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:28,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:19:28,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2021-10-06 16:19:28,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970007898] [2021-10-06 16:19:28,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:19:28,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:19:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:28,621 INFO L87 Difference]: Start difference. First operand 31584 states and 147027 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:29,477 INFO L93 Difference]: Finished difference Result 44646 states and 205591 transitions. [2021-10-06 16:19:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:29,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 16:19:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:29,772 INFO L225 Difference]: With dead ends: 44646 [2021-10-06 16:19:29,772 INFO L226 Difference]: Without dead ends: 44646 [2021-10-06 16:19:29,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44646 states. [2021-10-06 16:19:31,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44646 to 33858. [2021-10-06 16:19:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33858 states, 33734 states have (on average 4.752830971719926) internal successors, (160332), 33857 states have internal predecessors, (160332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33858 states to 33858 states and 160332 transitions. [2021-10-06 16:19:31,372 INFO L78 Accepts]: Start accepts. Automaton has 33858 states and 160332 transitions. Word has length 11 [2021-10-06 16:19:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:31,373 INFO L470 AbstractCegarLoop]: Abstraction has 33858 states and 160332 transitions. [2021-10-06 16:19:31,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 33858 states and 160332 transitions. [2021-10-06 16:19:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 16:19:31,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:31,375 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:31,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-06 16:19:31,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:31,576 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:31,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2119341126, now seen corresponding path program 5 times [2021-10-06 16:19:31,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:31,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249013680] [2021-10-06 16:19:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:31,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:31,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:31,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249013680] [2021-10-06 16:19:31,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249013680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:31,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095079306] [2021-10-06 16:19:31,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:19:31,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:31,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:31,644 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:31,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-06 16:19:31,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:19:31,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:31,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 16:19:31,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:31,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095079306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:19:31,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:19:31,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2021-10-06 16:19:31,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099826586] [2021-10-06 16:19:31,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:19:31,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:19:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:19:31,829 INFO L87 Difference]: Start difference. First operand 33858 states and 160332 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:32,616 INFO L93 Difference]: Finished difference Result 34584 states and 158361 transitions. [2021-10-06 16:19:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:19:32,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 16:19:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:32,821 INFO L225 Difference]: With dead ends: 34584 [2021-10-06 16:19:32,822 INFO L226 Difference]: Without dead ends: 34344 [2021-10-06 16:19:32,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:19:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34344 states. [2021-10-06 16:19:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34344 to 29756. [2021-10-06 16:19:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29756 states, 29632 states have (on average 4.683112850971923) internal successors, (138770), 29755 states have internal predecessors, (138770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29756 states to 29756 states and 138770 transitions. [2021-10-06 16:19:34,465 INFO L78 Accepts]: Start accepts. Automaton has 29756 states and 138770 transitions. Word has length 12 [2021-10-06 16:19:34,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:34,465 INFO L470 AbstractCegarLoop]: Abstraction has 29756 states and 138770 transitions. [2021-10-06 16:19:34,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 29756 states and 138770 transitions. [2021-10-06 16:19:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 16:19:34,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:34,469 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:34,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:34,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-06 16:19:34,683 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:34,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:34,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1106814873, now seen corresponding path program 1 times [2021-10-06 16:19:34,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:34,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017654959] [2021-10-06 16:19:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:34,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:34,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:34,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017654959] [2021-10-06 16:19:34,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017654959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:34,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021318338] [2021-10-06 16:19:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:34,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:34,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:34,746 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:34,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-06 16:19:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:34,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 16:19:34,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:35,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021318338] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:35,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:35,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-06 16:19:35,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702544538] [2021-10-06 16:19:35,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 16:19:35,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 16:19:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:19:35,100 INFO L87 Difference]: Start difference. First operand 29756 states and 138770 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:36,015 INFO L93 Difference]: Finished difference Result 49212 states and 214801 transitions. [2021-10-06 16:19:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 16:19:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 16:19:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:36,738 INFO L225 Difference]: With dead ends: 49212 [2021-10-06 16:19:36,738 INFO L226 Difference]: Without dead ends: 49134 [2021-10-06 16:19:36,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 169.7ms TimeCoverageRelationStatistics Valid=74, Invalid=108, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:19:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49134 states. [2021-10-06 16:19:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49134 to 31834. [2021-10-06 16:19:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31714 states have (on average 4.655199596392761) internal successors, (147635), 31833 states have internal predecessors, (147635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 147635 transitions. [2021-10-06 16:19:38,223 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 147635 transitions. Word has length 12 [2021-10-06 16:19:38,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:38,224 INFO L470 AbstractCegarLoop]: Abstraction has 31834 states and 147635 transitions. [2021-10-06 16:19:38,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 147635 transitions. [2021-10-06 16:19:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:19:38,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:38,229 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:38,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:38,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-06 16:19:38,445 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:38,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2073881656, now seen corresponding path program 1 times [2021-10-06 16:19:38,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:38,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492572789] [2021-10-06 16:19:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:38,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:38,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:38,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492572789] [2021-10-06 16:19:38,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492572789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:38,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199114294] [2021-10-06 16:19:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:38,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:38,538 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:38,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-06 16:19:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:39,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:19:39,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:39,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199114294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:39,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:39,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-06 16:19:39,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441649849] [2021-10-06 16:19:39,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:39,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:39,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:39,298 INFO L87 Difference]: Start difference. First operand 31834 states and 147635 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:40,953 INFO L93 Difference]: Finished difference Result 73316 states and 335957 transitions. [2021-10-06 16:19:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 16:19:40,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 16:19:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:41,495 INFO L225 Difference]: With dead ends: 73316 [2021-10-06 16:19:41,495 INFO L226 Difference]: Without dead ends: 73226 [2021-10-06 16:19:41,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-10-06 16:19:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73226 states. [2021-10-06 16:19:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73226 to 52356. [2021-10-06 16:19:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52356 states, 52236 states have (on average 4.922428976185007) internal successors, (257128), 52355 states have internal predecessors, (257128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:44,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52356 states to 52356 states and 257128 transitions. [2021-10-06 16:19:44,555 INFO L78 Accepts]: Start accepts. Automaton has 52356 states and 257128 transitions. Word has length 14 [2021-10-06 16:19:44,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:44,555 INFO L470 AbstractCegarLoop]: Abstraction has 52356 states and 257128 transitions. [2021-10-06 16:19:44,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:44,556 INFO L276 IsEmpty]: Start isEmpty. Operand 52356 states and 257128 transitions. [2021-10-06 16:19:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:19:44,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:44,577 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:44,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:44,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:44,792 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:44,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:44,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1282870184, now seen corresponding path program 2 times [2021-10-06 16:19:44,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:44,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596108426] [2021-10-06 16:19:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:44,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:44,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:44,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596108426] [2021-10-06 16:19:44,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596108426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:44,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390666218] [2021-10-06 16:19:44,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:19:44,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:44,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:44,859 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:44,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-06 16:19:45,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:19:45,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:45,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:19:45,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:45,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390666218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:45,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:45,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-06 16:19:45,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715521344] [2021-10-06 16:19:45,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:45,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:45,136 INFO L87 Difference]: Start difference. First operand 52356 states and 257128 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:19:47,686 INFO L93 Difference]: Finished difference Result 133810 states and 661004 transitions. [2021-10-06 16:19:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 16:19:47,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 16:19:47,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:19:49,258 INFO L225 Difference]: With dead ends: 133810 [2021-10-06 16:19:49,259 INFO L226 Difference]: Without dead ends: 133702 [2021-10-06 16:19:49,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:19:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133702 states. [2021-10-06 16:19:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133702 to 102678. [2021-10-06 16:19:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102678 states, 102558 states have (on average 5.299459817859162) internal successors, (543502), 102677 states have internal predecessors, (543502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102678 states to 102678 states and 543502 transitions. [2021-10-06 16:19:55,196 INFO L78 Accepts]: Start accepts. Automaton has 102678 states and 543502 transitions. Word has length 14 [2021-10-06 16:19:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:19:55,196 INFO L470 AbstractCegarLoop]: Abstraction has 102678 states and 543502 transitions. [2021-10-06 16:19:55,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:19:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 102678 states and 543502 transitions. [2021-10-06 16:19:55,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 16:19:55,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:19:55,203 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:19:55,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-06 16:19:55,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:55,404 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:19:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:19:55,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1282876694, now seen corresponding path program 3 times [2021-10-06 16:19:55,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:19:55,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56588491] [2021-10-06 16:19:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:19:55,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:19:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:19:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:55,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:19:55,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56588491] [2021-10-06 16:19:55,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56588491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:55,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167819904] [2021-10-06 16:19:55,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:19:55,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:19:55,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:19:55,452 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:19:55,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-06 16:19:55,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 16:19:55,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:19:55,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 16:19:55,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:19:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:19:55,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167819904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:19:55,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:19:55,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-06 16:19:55,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343880373] [2021-10-06 16:19:55,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 16:19:55,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:19:55,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 16:19:55,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-06 16:19:55,758 INFO L87 Difference]: Start difference. First operand 102678 states and 543502 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:00,731 INFO L93 Difference]: Finished difference Result 223170 states and 1177535 transitions. [2021-10-06 16:20:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 16:20:00,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 16:20:00,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:04,421 INFO L225 Difference]: With dead ends: 223170 [2021-10-06 16:20:04,422 INFO L226 Difference]: Without dead ends: 223080 [2021-10-06 16:20:04,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:20:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223080 states. [2021-10-06 16:20:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223080 to 172440. [2021-10-06 16:20:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172440 states, 172320 states have (on average 5.63683844011142) internal successors, (971340), 172439 states have internal predecessors, (971340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172440 states to 172440 states and 971340 transitions. [2021-10-06 16:20:19,868 INFO L78 Accepts]: Start accepts. Automaton has 172440 states and 971340 transitions. Word has length 14 [2021-10-06 16:20:19,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:19,869 INFO L470 AbstractCegarLoop]: Abstraction has 172440 states and 971340 transitions. [2021-10-06 16:20:19,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 172440 states and 971340 transitions. [2021-10-06 16:20:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 16:20:19,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:19,912 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:19,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-06 16:20:20,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-06 16:20:20,115 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:20:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:20,115 INFO L82 PathProgramCache]: Analyzing trace with hash 134180137, now seen corresponding path program 4 times [2021-10-06 16:20:20,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:20,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051949751] [2021-10-06 16:20:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:20,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:20,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:20,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051949751] [2021-10-06 16:20:20,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051949751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:20,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323479305] [2021-10-06 16:20:20,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:20:20,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:20,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:20,271 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:20,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-06 16:20:20,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:20:20,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:20,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:20:20,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:20,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323479305] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:20,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:20:20,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 16:20:20,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993309975] [2021-10-06 16:20:20,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:20:20,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:20,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:20:20,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:20:20,956 INFO L87 Difference]: Start difference. First operand 172440 states and 971340 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:20:34,333 INFO L93 Difference]: Finished difference Result 444114 states and 2341344 transitions. [2021-10-06 16:20:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 16:20:34,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 16:20:34,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:20:41,378 INFO L225 Difference]: With dead ends: 444114 [2021-10-06 16:20:41,380 INFO L226 Difference]: Without dead ends: 443812 [2021-10-06 16:20:41,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 248.7ms TimeCoverageRelationStatistics Valid=189, Invalid=317, Unknown=0, NotChecked=0, Total=506 [2021-10-06 16:20:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443812 states. [2021-10-06 16:20:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443812 to 91190. [2021-10-06 16:20:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91190 states, 91070 states have (on average 5.080992643021851) internal successors, (462726), 91189 states have internal predecessors, (462726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91190 states to 91190 states and 462726 transitions. [2021-10-06 16:20:59,190 INFO L78 Accepts]: Start accepts. Automaton has 91190 states and 462726 transitions. Word has length 15 [2021-10-06 16:20:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:20:59,193 INFO L470 AbstractCegarLoop]: Abstraction has 91190 states and 462726 transitions. [2021-10-06 16:20:59,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:20:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 91190 states and 462726 transitions. [2021-10-06 16:20:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 16:20:59,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:20:59,205 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:20:59,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-06 16:20:59,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:59,421 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:20:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:20:59,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1114268007, now seen corresponding path program 5 times [2021-10-06 16:20:59,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:20:59,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880118164] [2021-10-06 16:20:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:20:59,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:20:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:20:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:20:59,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:20:59,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880118164] [2021-10-06 16:20:59,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880118164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:20:59,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013225602] [2021-10-06 16:20:59,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:20:59,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:20:59,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:20:59,491 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:20:59,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-06 16:20:59,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:20:59,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:20:59,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 16:20:59,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:20:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:20:59,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013225602] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:20:59,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 16:20:59,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2021-10-06 16:20:59,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279555582] [2021-10-06 16:20:59,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 16:20:59,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:20:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 16:20:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:20:59,764 INFO L87 Difference]: Start difference. First operand 91190 states and 462726 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:00,080 INFO L93 Difference]: Finished difference Result 34526 states and 144954 transitions. [2021-10-06 16:21:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 16:21:00,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 16:21:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:00,231 INFO L225 Difference]: With dead ends: 34526 [2021-10-06 16:21:00,231 INFO L226 Difference]: Without dead ends: 33448 [2021-10-06 16:21:00,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-06 16:21:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33448 states. [2021-10-06 16:21:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33448 to 17044. [2021-10-06 16:21:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17044 states, 16952 states have (on average 4.218794242567249) internal successors, (71517), 17043 states have internal predecessors, (71517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17044 states to 17044 states and 71517 transitions. [2021-10-06 16:21:01,318 INFO L78 Accepts]: Start accepts. Automaton has 17044 states and 71517 transitions. Word has length 15 [2021-10-06 16:21:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:01,318 INFO L470 AbstractCegarLoop]: Abstraction has 17044 states and 71517 transitions. [2021-10-06 16:21:01,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 17044 states and 71517 transitions. [2021-10-06 16:21:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 16:21:01,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:01,321 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:01,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-06 16:21:01,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:01,522 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:01,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1128566705, now seen corresponding path program 1 times [2021-10-06 16:21:01,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:01,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515488862] [2021-10-06 16:21:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:01,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:01,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:01,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515488862] [2021-10-06 16:21:01,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515488862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:01,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638279324] [2021-10-06 16:21:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:01,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:01,593 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:01,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-06 16:21:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:01,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 16:21:01,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:02,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638279324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:02,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:02,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-06 16:21:02,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507876421] [2021-10-06 16:21:02,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 16:21:02,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:02,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 16:21:02,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:21:02,148 INFO L87 Difference]: Start difference. First operand 17044 states and 71517 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:03,701 INFO L93 Difference]: Finished difference Result 65904 states and 264917 transitions. [2021-10-06 16:21:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 16:21:03,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 16:21:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:04,405 INFO L225 Difference]: With dead ends: 65904 [2021-10-06 16:21:04,405 INFO L226 Difference]: Without dead ends: 65372 [2021-10-06 16:21:04,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 249.5ms TimeCoverageRelationStatistics Valid=138, Invalid=204, Unknown=0, NotChecked=0, Total=342 [2021-10-06 16:21:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65372 states. [2021-10-06 16:21:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65372 to 26886. [2021-10-06 16:21:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26886 states, 26794 states have (on average 4.432895424348735) internal successors, (118775), 26885 states have internal predecessors, (118775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26886 states to 26886 states and 118775 transitions. [2021-10-06 16:21:05,807 INFO L78 Accepts]: Start accepts. Automaton has 26886 states and 118775 transitions. Word has length 15 [2021-10-06 16:21:05,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:05,807 INFO L470 AbstractCegarLoop]: Abstraction has 26886 states and 118775 transitions. [2021-10-06 16:21:05,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 26886 states and 118775 transitions. [2021-10-06 16:21:05,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 16:21:05,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:05,813 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:05,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:06,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-06 16:21:06,015 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash 137503855, now seen corresponding path program 2 times [2021-10-06 16:21:06,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:06,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639743428] [2021-10-06 16:21:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:06,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:06,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:06,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639743428] [2021-10-06 16:21:06,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639743428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:06,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725133933] [2021-10-06 16:21:06,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:21:06,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:06,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:06,118 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:06,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-06 16:21:06,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:21:06,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:06,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 16:21:06,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:07,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725133933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:07,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:07,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-06 16:21:07,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227029109] [2021-10-06 16:21:07,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 16:21:07,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 16:21:07,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-10-06 16:21:07,674 INFO L87 Difference]: Start difference. First operand 26886 states and 118775 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:10,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:10,488 INFO L93 Difference]: Finished difference Result 96962 states and 404280 transitions. [2021-10-06 16:21:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 16:21:10,488 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 16:21:10,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:11,170 INFO L225 Difference]: With dead ends: 96962 [2021-10-06 16:21:11,170 INFO L226 Difference]: Without dead ends: 96166 [2021-10-06 16:21:11,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 445.2ms TimeCoverageRelationStatistics Valid=289, Invalid=467, Unknown=0, NotChecked=0, Total=756 [2021-10-06 16:21:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96166 states. [2021-10-06 16:21:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96166 to 35520. [2021-10-06 16:21:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35520 states, 35428 states have (on average 4.536581235181212) internal successors, (160722), 35519 states have internal predecessors, (160722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35520 states to 35520 states and 160722 transitions. [2021-10-06 16:21:13,580 INFO L78 Accepts]: Start accepts. Automaton has 35520 states and 160722 transitions. Word has length 17 [2021-10-06 16:21:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:13,580 INFO L470 AbstractCegarLoop]: Abstraction has 35520 states and 160722 transitions. [2021-10-06 16:21:13,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 35520 states and 160722 transitions. [2021-10-06 16:21:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 16:21:13,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:13,591 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:13,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-06 16:21:13,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-06 16:21:13,796 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1953455727, now seen corresponding path program 1 times [2021-10-06 16:21:13,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:13,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613326410] [2021-10-06 16:21:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:13,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:21:13,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:13,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613326410] [2021-10-06 16:21:13,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613326410] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-06 16:21:13,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-06 16:21:13,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-06 16:21:13,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624761544] [2021-10-06 16:21:13,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 16:21:13,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 16:21:13,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:21:13,857 INFO L87 Difference]: Start difference. First operand 35520 states and 160722 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:14,860 INFO L93 Difference]: Finished difference Result 42570 states and 183983 transitions. [2021-10-06 16:21:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 16:21:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 16:21:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:15,085 INFO L225 Difference]: With dead ends: 42570 [2021-10-06 16:21:15,085 INFO L226 Difference]: Without dead ends: 41884 [2021-10-06 16:21:15,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 16:21:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41884 states. [2021-10-06 16:21:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41884 to 35464. [2021-10-06 16:21:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35464 states, 35380 states have (on average 4.527416619559073) internal successors, (160180), 35463 states have internal predecessors, (160180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35464 states to 35464 states and 160180 transitions. [2021-10-06 16:21:17,056 INFO L78 Accepts]: Start accepts. Automaton has 35464 states and 160180 transitions. Word has length 19 [2021-10-06 16:21:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:17,057 INFO L470 AbstractCegarLoop]: Abstraction has 35464 states and 160180 transitions. [2021-10-06 16:21:17,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 35464 states and 160180 transitions. [2021-10-06 16:21:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 16:21:17,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:17,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:17,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-06 16:21:17,070 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:17,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:17,071 INFO L82 PathProgramCache]: Analyzing trace with hash 535207602, now seen corresponding path program 1 times [2021-10-06 16:21:17,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:17,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229424914] [2021-10-06 16:21:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:17,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:21:17,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:17,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229424914] [2021-10-06 16:21:17,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229424914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:17,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888994066] [2021-10-06 16:21:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:17,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:17,165 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:17,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-06 16:21:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:17,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:21:17,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:21:17,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888994066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:17,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:17,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-06 16:21:17,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112221047] [2021-10-06 16:21:17,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 16:21:17,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 16:21:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:21:17,872 INFO L87 Difference]: Start difference. First operand 35464 states and 160180 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:19,959 INFO L93 Difference]: Finished difference Result 75426 states and 310375 transitions. [2021-10-06 16:21:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 16:21:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 16:21:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:20,428 INFO L225 Difference]: With dead ends: 75426 [2021-10-06 16:21:20,428 INFO L226 Difference]: Without dead ends: 74360 [2021-10-06 16:21:20,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 425.2ms TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2021-10-06 16:21:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74360 states. [2021-10-06 16:21:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74360 to 44552. [2021-10-06 16:21:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44552 states, 44468 states have (on average 4.4987181793649365) internal successors, (200049), 44551 states have internal predecessors, (200049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44552 states to 44552 states and 200049 transitions. [2021-10-06 16:21:23,177 INFO L78 Accepts]: Start accepts. Automaton has 44552 states and 200049 transitions. Word has length 20 [2021-10-06 16:21:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:23,182 INFO L470 AbstractCegarLoop]: Abstraction has 44552 states and 200049 transitions. [2021-10-06 16:21:23,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 44552 states and 200049 transitions. [2021-10-06 16:21:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 16:21:23,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:23,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:23,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-06 16:21:23,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-06 16:21:23,444 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:23,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1419269280, now seen corresponding path program 2 times [2021-10-06 16:21:23,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:23,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88061438] [2021-10-06 16:21:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:23,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:21:23,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:23,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88061438] [2021-10-06 16:21:23,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88061438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:23,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458462551] [2021-10-06 16:21:23,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:21:23,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:23,527 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:23,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-06 16:21:23,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:21:23,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:23,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:21:23,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:24,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458462551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:24,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:24,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-10-06 16:21:24,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822909102] [2021-10-06 16:21:24,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:21:24,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:21:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:21:24,214 INFO L87 Difference]: Start difference. First operand 44552 states and 200049 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:26,522 INFO L93 Difference]: Finished difference Result 89386 states and 375198 transitions. [2021-10-06 16:21:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 16:21:26,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 16:21:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:27,084 INFO L225 Difference]: With dead ends: 89386 [2021-10-06 16:21:27,084 INFO L226 Difference]: Without dead ends: 88132 [2021-10-06 16:21:27,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 405.1ms TimeCoverageRelationStatistics Valid=214, Invalid=338, Unknown=0, NotChecked=0, Total=552 [2021-10-06 16:21:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88132 states. [2021-10-06 16:21:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88132 to 41384. [2021-10-06 16:21:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41384 states, 41300 states have (on average 4.502857142857143) internal successors, (185968), 41383 states have internal predecessors, (185968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41384 states to 41384 states and 185968 transitions. [2021-10-06 16:21:29,886 INFO L78 Accepts]: Start accepts. Automaton has 41384 states and 185968 transitions. Word has length 20 [2021-10-06 16:21:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:29,886 INFO L470 AbstractCegarLoop]: Abstraction has 41384 states and 185968 transitions. [2021-10-06 16:21:29,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 41384 states and 185968 transitions. [2021-10-06 16:21:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 16:21:29,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:29,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:29,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-06 16:21:30,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-06 16:21:30,138 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:30,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:30,139 INFO L82 PathProgramCache]: Analyzing trace with hash -151935650, now seen corresponding path program 3 times [2021-10-06 16:21:30,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:30,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692046615] [2021-10-06 16:21:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:30,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:30,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:30,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692046615] [2021-10-06 16:21:30,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692046615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:30,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478781103] [2021-10-06 16:21:30,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:21:30,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:30,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:30,221 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:30,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-06 16:21:30,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 16:21:30,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:30,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:21:30,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:21:30,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478781103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:30,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:30,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-06 16:21:30,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328851686] [2021-10-06 16:21:30,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 16:21:30,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 16:21:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-06 16:21:30,828 INFO L87 Difference]: Start difference. First operand 41384 states and 185968 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:31,616 INFO L93 Difference]: Finished difference Result 38578 states and 158654 transitions. [2021-10-06 16:21:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 16:21:31,617 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 16:21:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:31,796 INFO L225 Difference]: With dead ends: 38578 [2021-10-06 16:21:31,796 INFO L226 Difference]: Without dead ends: 37724 [2021-10-06 16:21:31,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 270.9ms TimeCoverageRelationStatistics Valid=123, Invalid=183, Unknown=0, NotChecked=0, Total=306 [2021-10-06 16:21:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37724 states. [2021-10-06 16:21:32,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37724 to 12668. [2021-10-06 16:21:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12668 states, 12642 states have (on average 3.9406739439962033) internal successors, (49818), 12667 states have internal predecessors, (49818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12668 states to 12668 states and 49818 transitions. [2021-10-06 16:21:32,873 INFO L78 Accepts]: Start accepts. Automaton has 12668 states and 49818 transitions. Word has length 20 [2021-10-06 16:21:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:32,874 INFO L470 AbstractCegarLoop]: Abstraction has 12668 states and 49818 transitions. [2021-10-06 16:21:32,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 12668 states and 49818 transitions. [2021-10-06 16:21:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 16:21:32,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:32,891 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:32,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:33,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-06 16:21:33,099 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:33,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:33,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1101372859, now seen corresponding path program 1 times [2021-10-06 16:21:33,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:33,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208877639] [2021-10-06 16:21:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:33,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 16:21:33,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:33,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208877639] [2021-10-06 16:21:33,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208877639] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:33,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373856345] [2021-10-06 16:21:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:33,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:33,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:33,182 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:33,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-06 16:21:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:33,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 16:21:33,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 16:21:33,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373856345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:33,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:33,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-10-06 16:21:33,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620817509] [2021-10-06 16:21:33,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 16:21:33,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 16:21:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-06 16:21:33,794 INFO L87 Difference]: Start difference. First operand 12668 states and 49818 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:35,664 INFO L93 Difference]: Finished difference Result 65402 states and 252386 transitions. [2021-10-06 16:21:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 16:21:35,665 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 16:21:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:35,967 INFO L225 Difference]: With dead ends: 65402 [2021-10-06 16:21:35,968 INFO L226 Difference]: Without dead ends: 56056 [2021-10-06 16:21:35,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 423.5ms TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 16:21:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56056 states. [2021-10-06 16:21:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56056 to 31284. [2021-10-06 16:21:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31284 states, 31258 states have (on average 3.909623136477062) internal successors, (122207), 31283 states have internal predecessors, (122207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31284 states to 31284 states and 122207 transitions. [2021-10-06 16:21:37,683 INFO L78 Accepts]: Start accepts. Automaton has 31284 states and 122207 transitions. Word has length 24 [2021-10-06 16:21:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:37,683 INFO L470 AbstractCegarLoop]: Abstraction has 31284 states and 122207 transitions. [2021-10-06 16:21:37,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 31284 states and 122207 transitions. [2021-10-06 16:21:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 16:21:37,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:37,730 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:37,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:37,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:37,932 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:37,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1749259654, now seen corresponding path program 2 times [2021-10-06 16:21:37,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:37,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683227804] [2021-10-06 16:21:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:37,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 16:21:38,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:38,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683227804] [2021-10-06 16:21:38,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683227804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:38,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107000865] [2021-10-06 16:21:38,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 16:21:38,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:38,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:38,035 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:38,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-06 16:21:38,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 16:21:38,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:38,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:21:38,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:21:38,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107000865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:38,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:38,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 9 [2021-10-06 16:21:38,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179336960] [2021-10-06 16:21:38,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 16:21:38,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 16:21:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-06 16:21:38,770 INFO L87 Difference]: Start difference. First operand 31284 states and 122207 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:40,869 INFO L93 Difference]: Finished difference Result 110674 states and 427532 transitions. [2021-10-06 16:21:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 16:21:40,869 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 16:21:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:42,214 INFO L225 Difference]: With dead ends: 110674 [2021-10-06 16:21:42,215 INFO L226 Difference]: Without dead ends: 110592 [2021-10-06 16:21:42,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 386.9ms TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2021-10-06 16:21:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110592 states. [2021-10-06 16:21:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110592 to 58368. [2021-10-06 16:21:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58368 states, 58342 states have (on average 4.0176545198999) internal successors, (234398), 58367 states have internal predecessors, (234398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58368 states to 58368 states and 234398 transitions. [2021-10-06 16:21:45,573 INFO L78 Accepts]: Start accepts. Automaton has 58368 states and 234398 transitions. Word has length 25 [2021-10-06 16:21:45,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:21:45,574 INFO L470 AbstractCegarLoop]: Abstraction has 58368 states and 234398 transitions. [2021-10-06 16:21:45,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 58368 states and 234398 transitions. [2021-10-06 16:21:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 16:21:45,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:21:45,661 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:21:45,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-06 16:21:45,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:45,866 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:21:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:21:45,867 INFO L82 PathProgramCache]: Analyzing trace with hash 828553228, now seen corresponding path program 3 times [2021-10-06 16:21:45,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:21:45,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880113588] [2021-10-06 16:21:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:21:45,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:21:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:21:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:21:45,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:21:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880113588] [2021-10-06 16:21:45,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880113588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688967421] [2021-10-06 16:21:45,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 16:21:45,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:21:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:21:45,960 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:21:45,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-06 16:21:46,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 16:21:46,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:21:46,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 16:21:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:21:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 16:21:46,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688967421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:21:46,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:21:46,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 16:21:46,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153028744] [2021-10-06 16:21:46,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 16:21:46,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:21:46,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 16:21:46,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-06 16:21:46,734 INFO L87 Difference]: Start difference. First operand 58368 states and 234398 transitions. Second operand has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:21:53,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:21:53,480 INFO L93 Difference]: Finished difference Result 306240 states and 1205122 transitions. [2021-10-06 16:21:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 16:21:53,487 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 16:21:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:21:56,538 INFO L225 Difference]: With dead ends: 306240 [2021-10-06 16:21:56,539 INFO L226 Difference]: Without dead ends: 304234 [2021-10-06 16:21:56,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1192.0ms TimeCoverageRelationStatistics Valid=750, Invalid=1902, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 16:21:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304234 states. [2021-10-06 16:22:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304234 to 170522. [2021-10-06 16:22:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170522 states, 170496 states have (on average 4.097832207207207) internal successors, (698664), 170521 states have internal predecessors, (698664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170522 states to 170522 states and 698664 transitions. [2021-10-06 16:22:09,667 INFO L78 Accepts]: Start accepts. Automaton has 170522 states and 698664 transitions. Word has length 25 [2021-10-06 16:22:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:09,668 INFO L470 AbstractCegarLoop]: Abstraction has 170522 states and 698664 transitions. [2021-10-06 16:22:09,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 170522 states and 698664 transitions. [2021-10-06 16:22:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:22:10,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:10,061 INFO L512 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:22:10,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:10,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:10,262 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:22:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:10,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1704553013, now seen corresponding path program 4 times [2021-10-06 16:22:10,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:10,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538975532] [2021-10-06 16:22:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:10,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-06 16:22:10,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:10,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538975532] [2021-10-06 16:22:10,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538975532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:10,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925660527] [2021-10-06 16:22:10,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 16:22:10,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:10,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:10,425 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:10,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-06 16:22:10,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 16:22:10,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:10,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 16:22:10,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 16:22:11,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925660527] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:11,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:11,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 16:22:11,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275605969] [2021-10-06 16:22:11,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 16:22:11,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 16:22:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-06 16:22:11,441 INFO L87 Difference]: Start difference. First operand 170522 states and 698664 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:21,218 INFO L93 Difference]: Finished difference Result 390784 states and 1576971 transitions. [2021-10-06 16:22:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 16:22:21,219 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-06 16:22:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:26,543 INFO L225 Difference]: With dead ends: 390784 [2021-10-06 16:22:26,543 INFO L226 Difference]: Without dead ends: 347564 [2021-10-06 16:22:26,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1199.3ms TimeCoverageRelationStatistics Valid=405, Invalid=1001, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 16:22:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347564 states. [2021-10-06 16:22:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347564 to 172728. [2021-10-06 16:22:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172728 states, 172702 states have (on average 4.175087723361629) internal successors, (721046), 172727 states have internal predecessors, (721046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172728 states to 172728 states and 721046 transitions. [2021-10-06 16:22:42,625 INFO L78 Accepts]: Start accepts. Automaton has 172728 states and 721046 transitions. Word has length 28 [2021-10-06 16:22:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:42,625 INFO L470 AbstractCegarLoop]: Abstraction has 172728 states and 721046 transitions. [2021-10-06 16:22:42,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 172728 states and 721046 transitions. [2021-10-06 16:22:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-06 16:22:42,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 16:22:42,967 INFO L512 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 16:22:42,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-06 16:22:43,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-06 16:22:43,180 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2021-10-06 16:22:43,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 16:22:43,181 INFO L82 PathProgramCache]: Analyzing trace with hash 918379831, now seen corresponding path program 5 times [2021-10-06 16:22:43,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-06 16:22:43,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457958901] [2021-10-06 16:22:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 16:22:43,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-06 16:22:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 16:22:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 16:22:43,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-06 16:22:43,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457958901] [2021-10-06 16:22:43,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457958901] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:43,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756736438] [2021-10-06 16:22:43,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 16:22:43,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 16:22:43,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 16:22:43,389 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 16:22:43,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-06 16:22:43,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 16:22:43,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 16:22:43,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 16:22:43,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 16:22:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 16:22:45,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756736438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-06 16:22:45,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 16:22:45,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 23 [2021-10-06 16:22:45,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143665681] [2021-10-06 16:22:45,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-06 16:22:45,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-06 16:22:45,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-06 16:22:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2021-10-06 16:22:45,594 INFO L87 Difference]: Start difference. First operand 172728 states and 721046 transitions. Second operand has 25 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 16:22:53,167 INFO L93 Difference]: Finished difference Result 353588 states and 1470774 transitions. [2021-10-06 16:22:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 16:22:53,168 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-06 16:22:53,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 16:22:53,168 INFO L225 Difference]: With dead ends: 353588 [2021-10-06 16:22:53,168 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 16:22:53,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1410.4ms TimeCoverageRelationStatistics Valid=714, Invalid=1736, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 16:22:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 16:22:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 16:22:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 16:22:53,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-06 16:22:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 16:22:53,170 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 16:22:53,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 16:22:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 16:22:53,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 16:22:53,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,174 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,174 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,174 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,174 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,174 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,174 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,174 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 16:22:53,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 16:22:53,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 16:22:53,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-06 16:22:53,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-06 16:22:53,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-06 16:22:53,384 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 16:22:53,384 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 16:22:53,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 04:22:53 BasicIcfg [2021-10-06 16:22:53,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 16:22:53,387 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-06 16:22:53,387 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-06 16:22:53,387 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-06 16:22:53,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 04:18:55" (3/4) ... [2021-10-06 16:22:53,393 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-06 16:22:53,398 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-06 16:22:53,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-06 16:22:53,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-06 16:22:53,404 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-06 16:22:53,405 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-06 16:22:53,405 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-06 16:22:53,405 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-06 16:22:53,452 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/parallel/misc-3-extended.wvr.c-witness.graphml [2021-10-06 16:22:53,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-06 16:22:53,455 INFO L168 Benchmark]: Toolchain (without parser) took 239421.96 ms. Allocated memory was 157.3 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 130.3 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.0 GB. Max. memory is 8.0 GB. [2021-10-06 16:22:53,455 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 16:22:53,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.71 ms. Allocated memory is still 157.3 MB. Free memory was 129.9 MB in the beginning and 119.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 16:22:53,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.95 ms. Allocated memory is still 157.3 MB. Free memory was 119.4 MB in the beginning and 117.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:22:53,456 INFO L168 Benchmark]: Boogie Preprocessor took 32.76 ms. Allocated memory is still 157.3 MB. Free memory was 117.9 MB in the beginning and 116.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 16:22:53,457 INFO L168 Benchmark]: RCFGBuilder took 709.45 ms. Allocated memory is still 157.3 MB. Free memory was 116.5 MB in the beginning and 136.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2021-10-06 16:22:53,457 INFO L168 Benchmark]: TraceAbstraction took 238293.12 ms. Allocated memory was 157.3 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 136.4 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.0 GB. Max. memory is 8.0 GB. [2021-10-06 16:22:53,458 INFO L168 Benchmark]: Witness Printer took 66.06 ms. Allocated memory is still 8.0 GB. Free memory was 5.0 GB in the beginning and 5.0 GB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-06 16:22:53,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.71 ms. Allocated memory is still 157.3 MB. Free memory was 129.9 MB in the beginning and 119.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.95 ms. Allocated memory is still 157.3 MB. Free memory was 119.4 MB in the beginning and 117.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.76 ms. Allocated memory is still 157.3 MB. Free memory was 117.9 MB in the beginning and 116.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 709.45 ms. Allocated memory is still 157.3 MB. Free memory was 116.5 MB in the beginning and 136.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 238293.12 ms. Allocated memory was 157.3 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 136.4 MB in the beginning and 5.0 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.0 GB. Max. memory is 8.0 GB. * Witness Printer took 66.06 ms. Allocated memory is still 8.0 GB. Free memory was 5.0 GB in the beginning and 5.0 GB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6254.5ms, 133 PlacesBefore, 49 PlacesAfterwards, 139 TransitionsBefore, 44 TransitionsAfterwards, 5030 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 16 ConcurrentYvCompositions, 11 ChoiceCompositions, 130 TotalNumberOfCompositions, 9915 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7532, positive: 7362, positive conditional: 0, positive unconditional: 7362, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3064, positive: 2999, positive conditional: 0, positive unconditional: 2999, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3064, positive: 2963, positive conditional: 0, positive unconditional: 2963, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 101, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 283, positive: 98, positive conditional: 0, positive unconditional: 98, negative: 185, negative conditional: 0, negative unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7532, positive: 4363, positive conditional: 0, positive unconditional: 4363, negative: 105, negative conditional: 0, negative unconditional: 105, unknown: 3064, unknown conditional: 0, unknown unconditional: 3064] , Statistics on independence cache: Total cache size (in pairs): 391, Positive cache size: 373, Positive conditional cache size: 0, Positive unconditional cache size: 373, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 186 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 238123.9ms, OverallIterations: 34, TraceHistogramMax: 6, EmptinessCheckTime: 1131.8ms, AutomataDifference: 100985.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6426.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1422 SDtfs, 10080 SDslu, 4454 SDs, 0 SdLazy, 7031 SolverSat, 3137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9074.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 840 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 7838.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=172728occurred in iteration=33, InterpolantAutomatonStates: 451, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 104300.1ms AutomataMinimizationTime, 34 MinimizatonAttempts, 1185850 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 293.9ms SsaConstructionTime, 1249.1ms SatisfiabilityAnalysisTime, 12309.9ms InterpolantComputationTime, 869 NumberOfCodeBlocks, 852 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 807 ConstructedInterpolants, 0 QuantifiedInterpolants, 6000 SizeOfPredicates, 112 NumberOfNonLiveVariables, 2857 ConjunctsInSsa, 215 ConjunctsInUnsatCore, 62 InterpolantComputations, 13 PerfectInterpolantSequences, 115/359 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 16:22:53,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...